Necticut



(No Model.)

' G. E. HART & C. A. TAPLIN.

DRIVE CHAIN.

No. 476,201. Patented May 31,1892.

UNITED STATES PATENT OFFICE.

CHARLES E. HART AND CLARENCE A. TAPLIN, OF NElV BRITAIN, CON- NECTICUT, ASSIGNORS TO THE STANLEY WVORKS, OF SAME PLACE.

DRIVE-CHAIN.

SPECIFICATION forming part of Letters Patent No. 476,201, dated May 31,1892.

Application filed February 29, 1892- Serial No. 423,164. (No model.)

10 all whom it may concern:

Be it known that we, CHARLES E. HART and CLARENCE A. TAPLIN, both of New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Bracket-Arm Chain-Links, of which the following is afull, clear, and exact description, whereby any one skilled in the art can make and use the same. 7

Our invention relates to the general class of drive-chains that are made up of a series of separable links, the several links being united by interen gaging parts that are locked against any separation when the links are in the normal position for use; and the object of our invention is to provide a link of this class that has, among other features, a bracketarm or like means of supporting parts 'or devices that are frequently attached to such chains.

To this end our invention consists in the details of the several parts making up the drive-chain link; and in their combination, as more particularly hereinafter described, and pointed out in theclaims.

Referring to the drawings,.Fignre 1 is a detail front view of the improved link; Fig. 2

is a detail view in section through the link on a plane at right angles to the body part. Fig. 3 is a detail top viewof the link.

In the accompanying drawings the letter a denotes the main part of the link, comprising the open frame having at one end a pintle b and at the other enda knuckle c. This frame is preferably cut or stamped from sheetinetal of a suitable thickness to endure the tensile strain on the several parts to which they are subjected, and the pintle is formed by rolling up the metal at one end into a cylindrical or tubular form and curling up theknuckle cat the other end of the frame in such manner as to form a pintle-socket c, that is open on the vice to the link.

This bracket comprisesa part that projects substantially at right angles to the link and another part that conforms in outline to the knuckle and forms, in'fact, a reinforcement of the knuckle, being formed oftwo layers of metal rolled one within the other, as clearly shown in the sectional view in Fig. 2 of the drawings. The central part of the bracket is cut away, so that it conforms to and practically overlies the side parts of the frame, where it extends along and lies closely against such side parts. The projecting part of the bracket is usually provided with holes 6 through which bolts or other attachingmeans may pass for the purpose of securing any de- Such links come into usein the making of drive-chains that are adapted to support elevator-buckets or other structures that are used for containing grain or the like that may be lifted by such chains.

The part c of thelink that has been termed. herein the bracket may be made without the projecting part or arm, and forms then a supplemental layer that, having a part extending within the knuckle, reinforces it and enables it to be made up of the two layers of metal rolled one within the other.

Our invention contemplates the making of a link with the part 6 comprising simply the supplemental or reinforcing part. In either case an integral clip may be formed on either the main section or the supplementalsection of the blank.

Te claim as our invention- 1. The improved drivechain link comprising an open frame with pintle end and knuckle end and the supplemental frame secured to the main frame by integral clips formed on the one part and bent down upon the other, the pintle in said link being formed at one end of the main part and the knuckle at the opposite end andv of the two thicknesses of metal rolled one within the other, all substantially as described.

2. The improved drive-chain link comprising an open frame with pintle end and knuckle end a supplemental frame secured to the side parts of the main frame, with a portion extending along said side parts and providcd with a bracket-arm, and the integral IOO clips, whereby the two parts of the frame are formed of a double thickness of metal, one 10 secured together, all substantially as depart being rolled Within the other, all subscribed.

stantially as described. 3. The improved drive-chain link comprisx ing an open frame having integral clips on the side parts and a bracket part secured to the frame by said clips and having an arm proj ect- Witnesses: ingoverthe body of thelink, the pintleformed G. L. REYNOLDS, at one end of the main part and the knuckle G. L. VANNAIS. 

